If you don’t count yourself as a follower of Formula 1, you might not know that they no longer refuel the cars during pit-stops. Every car has to start the race with enough fuel to finish it. Along with being safer, it also means that the cars get increasingly faster as the race goes on. Burning all that fuel sheds an awful lot of weight. In addition, not having to wait for the tank to be filled means that pit-stop times have become amazingly quick. We’re now on the verge of seeing the first sub-2 second pit stop. Yes, that’s changing all four tires in under two seconds. Red Bull has produced a video showing how they manage such a thing. It all looks very cool in slow motion, but hang around for the end to see it in real time.